Bitly is a link creating tool that allows you to shorten your URLs. Instead of having bitlinks, or shortened URLs, that are made up of random letters and numbers, Bitly gives you the option to customize your links with the characters of your choice.
This walkthrough will help you to customize your Bitly links.
Make Custom Bitly Links
To create custom Bitly links, you have to first register for an account with the site.
Once you do that, shorten the link whose URL you'd like to customize. To do this, simply paste a link in the Paste a long URL here to shorten... field, and a shortened version will be created:
You can view all of your shortened links by going to the Your Bitlinks section:
Select the link that you want to customize, and click Edit bitlink:
Enter the custom name in the customize field. Try to keep it as short as possible: